Wrench.



U. SAUER.

WRENCH.

APPLICATION IILED.BEPT,25,1190B.

Patented Apr. 6, 1909'.

INVENTOR.

WITNESSES.

burrito stares TENT onrrcn CONRAD SAUER, OF HOMESTEAD, PENNSYLVANlA.

WRENCH.

Application filed September 25, 1908.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, CONRAD SABER, a resident of Homestead, in the countyof Allegheny and State of Pennsylvania, have invented a new and usefulImprovement in \"Vrenches; and I do hereby declare the following to be afull, clear, and exact description thereof.

My invention relates to wrenches. Its object is to provide a simple formof wrench by which the aws can be adjusted to the work to be performedand then quickly and firmly set and as quickly released, as well as toadapt the ordinary, or nut wrench, to use in pipe work, insuring a firmgrip of the pipe when applied; and to prevent rattling of the parts andconsequent wear and deterioration when the wrench is used as a hammer orthe like, and also to hold the wrench against accidental unlocking whenin use.

The invention comprises a wrench. bar mounted on the body portion of thewrench, and having an extension toothed on opposite sides, and a sleevemounted on the body portion and having like toothed faces, so that inone position the teeth do not engage, permitting sliding adjustment ofthe wrench' while by a quarter turn the teeth are brought intoengagement and hold the wrench firmly, and a spring suitably insertedbetween the body portion and the sleeve.

It comprises also an improved pipe gripping means in the jaw portion.

In the accompanying drawings Figure 1 is a side view partly broken awayshowing the wrench in disengaged position; Fig. 2 is a partial verticallongitudinal section showing the wrench in engaged position with thepipe gripping means adjusted to engage a pipe; Fig. 3 is a cross sectionof the handle portion of the wrench on the line 3 3, Fig. 1; Fig. 4 is alike cross section on the line 44, Fig. 2; and Fig. 5 is a detail crosssection illustrating the pipe wrench aw.

The wrench has a main bar 1 carrying at its outer end a aw head. 2 andhandle portion 5 at its opposite end. This bar fits within an opening inthe body portion 4. The shank portion 3 has teeth formed on oppositesides as at 7, such teeth being preferably formed as sections of threadsas illustrated, the plain faces 8 separating said threaded portions 7,the threads being mutilated or stripped as it were to form the plainfaces 8.

Mounted on the body 4 is the sleeve 9, said sleeve having like toothedfaces preferably formed of stripped or mutilated threads, that is,having the toothed or threaded faces 19 opposite each other and betweenthem the plain faces 11, so that when the threaded faces 7 of the wrenchbar are opposite the plain faces 11. of the sleeve the bar can be movedin and out and adjusted to the desired position without regard to thethreads, when by turning the sleeve 9 the threaded faces 10 are causedto engage with the threaded faces 7 and. so lock the wrench, asillustrated in Figs. 2 and 4. in such position the plain faces 8 and 11face each other. The sleeve 9 may be connected to the body portion 4 inany suitable way. I unite the two preferably by means of a threadedjoint 12 and locate between the two portions the spring 13 bearingagainst the end of the body and a shoulder 14 on the sleeve 9 so thatany n ear between the parts v. ill be taken up by the spring and anytendency of the threaded joint 12 to become loose u ill be overcome.

In order to regulate the relative movement of the body 4 and sleeve 9 1form in one of them a depressed seat or notch 15 extending around aboutone-fourth of the circumference, and secure upon the other member aprojecting lip 16 fitting in such depression so that when the sleeve isturned a quarter turn the lip strikes the end wall of the seat and whenturned in the opposite direction. is limited in like manner. 1 haveshown. the depression formed in the sleeve 9 and the lug secured to thebody 4. I prefer to make the joint between the body and sleeve andthreaded joint as shown, because in. the turning of the sleeve to lockthe wrench a slight portion of the lost motion will be taken up fromsaid threaded joint, causing the jaws to grip more tightly.

It is evident that the wrench can be'very easily applied, it only beingnecessary to place it upon the not or other body to be turned, andadjust the jaws 2 and 6 to such work when the teeth 7 and 10 are out ofengagernent, and then to give the sleeve 9 a quarter turn, bringing theteeth 7 and 10 into engagement and so locking the wrench, after which itcan be usedas an ordinary wrench. By forming the toothed faces 7 and 10as sections of threads, after the first engagement and upon furtherturning they serve to draw the jaws of the wrench together and increasetheir grip, and the same action is obtained. by using the threaded jointbetween the body 4 and sleeve 9. To disengage it it is only necessary toturn the sleeve 9 backwardly one-fourth turn, so disengaging the teeth 7and 10 and leaving the bar 1 free to slide wit lill the wrench body.

It is desirable to make the ordinary monkey wrench serve also as a pipewrench, and to that end I provide in the jaw 6 an adjustable jaw whichcan be raised above the jaw 6 or drawn back into and seated therein asdesired. To that end the jaw 6 has the recess 18 formed in its upper orbearing face and below that recess the threaded socket 19, such socketbeing preferably formed with a coarse and strong thread. Fitting intothe seat 18 is the pipe block 20 having a serrated or roughened uppersurface to grip into the pipe, such pipe block being secured to thescrew bar 21 working in the threaded socket 19 so that by the movementof the screw bar the pipe block can be raised above the jaw 6 and inposition to engage the pipe in connection with the jaw 2 of the wrench.The threaded bar 21 has the thumb piece 22 for turning the same, and itsopposite end forms a pivot head .23 fittin within the seat 24 in thepipe block, such pivot head taking the thrust upon the pipe block andsustaining the heavy strain brought thereon. The pipe block fits suchpivot head loosely and swings thereon to adapt its position to the pipein the wrenching operation. The pipe block is held upon the screw bar 21by pins 25 on the block fitting loosely into an annular recess 26 at theupper edge of the screw bar and permitting the block to swing as abovedescribed. Nhen the wrench is to be used for ordinary purposes, byturning the threaded bar 21 the pipe block is drawn down into the seat18 and remains out of use, but when the wrench is used upon pipe it isonly necessary to turn the threaded bar sufliciently to force I the pipeblock above the face of the jaw,

bringing it into position for action.

What I claim is:

1. In a wrench, the combination of a body portion having a jaw, a wrenchbar having a jaw and a shank portion provided with a mutilated thread, arotatable sleeve having means connecting it to said body portion holdingit against longitudinal movement relative thereto, and a spring confinedbetween said sleeve and said body portion.

2. In a wrench, the combination of a body portion having a jaw, a wrenchbar having a jaw and a toothed extension beyond the same, and a sleevehaving corresponding toothed faces and mounted on the body portion bymeans of a threaded joint, and a spring confined between the bodyportion and the sleeve.

3. An adjustable nut or pipe wrench having a shank portion and a jawrigid therewith and a body portion having a jaw face substantiallyparallel to said jaw on said shank, said jaw face having a socket formedtherein, a pipe block with a serrated face adjustable in said socket, athreaded bar mounted in said jaw portion and having a substantially flatconnection with the pipe block and forming the only support therefor inthe socket.

4. A pipe wrench having a seat in one of its jaws, a threaded barmounted in the jaw and movable ')erpendicularly thereto having a pivothead at its upper end adapted to engage a suitable pipe block, and apipe block in aforesaid seat having a circular pivot recess adapted toreceive said pivot head.

In testimony whereof, I the said CONRAD SAUER have hereunto set my hand.

CONRAD SAUER.

Witnesses ROBERT C. ToTTnN, J. R. KELLER.

